[XFS] replace b_fspriv with b_mount

Replace the b_fspriv pointer and it's ugly accessors with a properly types
xfs_mount pointer.  Also switch log reocvery over to it instead of using
b_fspriv for the mount pointer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

6 files changed, 19 insertions, 32 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index cd89c56715a5..b9c304a629ee 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1085,7 +1085,7 @@ xfs_bawrite(
         bp->b_flags &= ~(XBF_READ | XBF_DELWRI | XBF_READ_AHEAD);
         bp->b_flags |= (XBF_WRITE | XBF_ASYNC | _XBF_RUN_QUEUES);
 
-        bp->b_fspriv3 = mp;
+        bp->b_mount = mp;
         bp->b_strat = xfs_bdstrat_cb;
         return xfs_bdstrat_cb(bp);
 }
@@ -1098,7 +1098,7 @@ xfs_bdwrite(
         XB_TRACE(bp, "bdwrite", 0);
 
         bp->b_strat = xfs_bdstrat_cb;
-        bp->b_fspriv3 = mp;
+        bp->b_mount = mp;
 
         bp->b_flags &= ~XBF_READ;
         bp->b_flags |= (XBF_DELWRI | XBF_ASYNC);
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index 0e2aa16f5e41..af8764e02d78 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -168,7 +168,7 @@ typedef struct xfs_buf {
         struct completion       b_iowait;       /* queue for I/O waiters */
         void                    *b_fspriv;
         void                    *b_fspriv2;
-        void                    *b_fspriv3;
+        struct xfs_mount        *b_mount;
         unsigned short          b_error;        /* error code on I/O */
         unsigned int            b_page_count;   /* size of page array */
         unsigned int            b_offset;       /* page offset in first page */
@@ -335,8 +335,6 @@ extern void xfs_buf_trace(xfs_buf_t *, char *, void *, void *);
 #define XFS_BUF_SET_FSPRIVATE(bp, val)          ((bp)->b_fspriv = (void*)(val))
 #define XFS_BUF_FSPRIVATE2(bp, type)            ((type)(bp)->b_fspriv2)
 #define XFS_BUF_SET_FSPRIVATE2(bp, val)         ((bp)->b_fspriv2 = (void*)(val))
-#define XFS_BUF_FSPRIVATE3(bp, type)            ((type)(bp)->b_fspriv3)
-#define XFS_BUF_SET_FSPRIVATE3(bp, val)         ((bp)->b_fspriv3 = (void*)(val))
 #define XFS_BUF_SET_START(bp)                   do { } while (0)
 #define XFS_BUF_SET_BRELSE_FUNC(bp, func)       ((bp)->b_relse = (func))
 
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 59b7d5f9e64a..92ce34b3787a 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -847,13 +847,7 @@ retry:
 int
 xfs_bdstrat_cb(struct xfs_buf *bp)
 {
-        xfs_mount_t     *mp;
-
-        mp = XFS_BUF_FSPRIVATE3(bp, xfs_mount_t *);
-        if (!XFS_FORCED_SHUTDOWN(mp)) {
-                xfs_buf_iorequest(bp);
-                return 0;
-        } else {
+        if (XFS_FORCED_SHUTDOWN(bp->b_mount)) {
                 xfs_buftrace("XFS__BDSTRAT IOERROR", bp);
                 /*
                  * Metadata write that didn't get logged but
@@ -866,6 +860,9 @@ xfs_bdstrat_cb(struct xfs_buf *bp)
                 else
                         return (xfs_bioerror(bp));
         }
+
+        xfs_buf_iorequest(bp);
+        return 0;
 }
 
 /*
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index d245d04e10ca..d74ce1134262 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -707,8 +707,8 @@ xfs_buf_item_init(
          * the first.  If we do already have one, there is
          * nothing to do here so return.
          */
-        if (XFS_BUF_FSPRIVATE3(bp, xfs_mount_t *) != mp)
-                XFS_BUF_SET_FSPRIVATE3(bp, mp);
+        if (bp->b_mount != mp)
+                bp->b_mount = mp;
         XFS_BUF_SET_BDSTRAT_FUNC(bp, xfs_bdstrat_cb);
         if (XFS_BUF_FSPRIVATE(bp, void *) != NULL) {
                 lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *);
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 51412cced010..35cca98bd94c 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -267,21 +267,16 @@ STATIC void
 xlog_recover_iodone(
         struct xfs_buf  *bp)
 {
-        xfs_mount_t     *mp;
-
-        ASSERT(XFS_BUF_FSPRIVATE(bp, void *));
-
         if (XFS_BUF_GETERROR(bp)) {
                 /*
                  * We're not going to bother about retrying
                  * this during recovery. One strike!
                  */
-                mp = XFS_BUF_FSPRIVATE(bp, xfs_mount_t *);
                 xfs_ioerror_alert("xlog_recover_iodone",
-                                  mp, bp, XFS_BUF_ADDR(bp));
-                xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
+                                  bp->b_mount, bp, XFS_BUF_ADDR(bp));
+                xfs_force_shutdown(bp->b_mount, SHUTDOWN_META_IO_ERROR);
         }
-        XFS_BUF_SET_FSPRIVATE(bp, NULL);
+        bp->b_mount = NULL;
         XFS_BUF_CLR_IODONE_FUNC(bp);
         xfs_biodone(bp);
 }
@@ -2225,9 +2220,8 @@ xlog_recover_do_buffer_trans(
                 XFS_BUF_STALE(bp);
                 error = xfs_bwrite(mp, bp);
         } else {
-                ASSERT(XFS_BUF_FSPRIVATE(bp, void *) == NULL ||
-                       XFS_BUF_FSPRIVATE(bp, xfs_mount_t *) == mp);
-                XFS_BUF_SET_FSPRIVATE(bp, mp);
+                ASSERT(bp->b_mount == NULL || bp->b_mount == mp);
+                bp->b_mount = mp;
                 XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
                 xfs_bdwrite(mp, bp);
         }
@@ -2490,9 +2484,8 @@ xlog_recover_do_inode_trans(
 
 write_inode_buffer:
         if (ITEM_TYPE(item) == XFS_LI_INODE) {
-                ASSERT(XFS_BUF_FSPRIVATE(bp, void *) == NULL ||
-                       XFS_BUF_FSPRIVATE(bp, xfs_mount_t *) == mp);
-                XFS_BUF_SET_FSPRIVATE(bp, mp);
+                ASSERT(bp->b_mount == NULL || bp->b_mount == mp);
+                bp->b_mount = mp;
                 XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
                 xfs_bdwrite(mp, bp);
         } else {
@@ -2623,9 +2616,8 @@ xlog_recover_do_dquot_trans(
         memcpy(ddq, recddq, item->ri_buf[1].i_len);
 
         ASSERT(dq_f->qlf_size == 2);
-        ASSERT(XFS_BUF_FSPRIVATE(bp, void *) == NULL ||
-               XFS_BUF_FSPRIVATE(bp, xfs_mount_t *) == mp);
-        XFS_BUF_SET_FSPRIVATE(bp, mp);
+        ASSERT(bp->b_mount == NULL || bp->b_mount == mp);
+        bp->b_mount = mp;
         XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
         xfs_bdwrite(mp, bp);
 
diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c
index 3a82576dde9a..36f3a21c54d2 100644
--- a/fs/xfs/xfs_rw.c
+++ b/fs/xfs/xfs_rw.c
@@ -406,7 +406,7 @@ xfs_bwrite(
          * XXXsup how does this work for quotas.
          */
         XFS_BUF_SET_BDSTRAT_FUNC(bp, xfs_bdstrat_cb);
-        XFS_BUF_SET_FSPRIVATE3(bp, mp);
+        bp->b_mount = mp;
         XFS_BUF_WRITE(bp);
 
         if ((error = XFS_bwrite(bp))) {